Prepare for the CompTIA Linux+ Certification Exam exam with our extensive collection of questions and answers. These practice Q&A are updated according to the latest syllabus, providing you with the tools needed to review and test your knowledge.
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A Linux systems administrator receives reports from various users that an application hosted on a server has stopped responding at similar times for several days in a row. The administrator logs in to the system and obtains the following output:
Output 1:
Output 2:
Output 3:
Which of the following should the administrator do to provide the BEST solution for the reported issue?
The development team created a new branch with code changes that a Linux administrator needs to pull from the remote repository. When the administrator looks for the branch in Git, the branch in question is not visible. Which of the following commands should the Linux administrator run to refresh the branch information?
git fetch is the command used to refresh the list of branches from the remote repository. It retrieves any new branches and updates the local metadata about the remote repository, making the branch visible locally. It does not change the working directory or merge any changes but updates the references.
A systems administrator is investigating an issue in which one of the servers is not booting up properly. The journalctl entries show the following:
Which of the following will allow the administrator to boot the Linux system to normal mode quickly?
Due to performance issues on a server, a Linux administrator needs to termi-nate an unresponsive process. Which of the following commands should the
administrator use to terminate the process immediately without waiting for a graceful shutdown?
To terminate an unresponsive process immediately without waiting for a graceful shutdown, the administrator can use the commandkill -SIGKILL 5545(A). This will send a signal to the process with the PID 5545 that cannot be ignored or handled by the process, and force it to stop. The other commands will send different signals that may allow the process to perform some cleanup or termination actions, or may be ignored by the process.Reference:
[CompTIA Linux+ Study Guide], Chapter 6: Managing Processes, Section: Killing Processes
[How to Kill Processes in Linux]
A Linux administrator is alerted to a storage capacity issue on a server without a specific mount point or directory. Which of the following commands would be MOST helpful for troubleshooting? (Choose two.)
To troubleshoot a storage capacity issue on a server without a specific mount point or directory, two commands that would be most helpful are df and du. The df command displays information about disk space usage on all mounted filesystems, including their size, used space, available space, and percentage of usage. The du command displays disk space usage by files and directories in a given path, which can help identify large files or directories that may be taking up too much space. The other commands are incorrect because they either do not show disk space usage, or they are used for other purposes such as partitioning, formatting, checking, mounting, copying, or listing files. Reference: CompTIA Linux+ Study Guide, Fourth Edition, page 417-419.
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